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Green Twin Oscillator Cast/Build

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MetalCaster:
Layout out the runners and gates for most of the parts for the green twin.

NickG:
Looks good!

MetalCaster:
Thanks Nick-

I am working on the core boxes for the cylinder support and the ports and passages in the cylinder.
I want cored ports and passages for this engine if I can make some that are that small.

The passages will be similar to those shown below, but I think I will reverse the sweep in the passage below the port from covex to concave.

I am going to attempt at least one of this engine in all cast iron.

doubleboost:
This is going to be good
Nice drawings looking forward to the patterns & cores
John

MetalCaster:
Thanks John.

Here is the core box I came up with for the passages/ports, made from scraps of brass, bronze and copper.

It needs a little refinement, but I did have some success with it.

Using a very fine sand and sodium silicate/CO2.

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